The girl sat in the corner quietly none of us noticed she wa

选C
The girl sat in the corner so quietly that none of us noticed she was there.
这个女生如此安静地坐在角落里以至于我们没人注意到她在那儿.
A选项such that 如此…以至于…是用来修饰名词或名词词组.例：such a lovely cat that everyone loves it.
B选项too to 太…而不能….例：She is too weak to carry the big box.
C选项so that 如此…以至于…是用来修形容词或副词.例：so lovely a cat that everyone loves it .He walks so quickly that nobody can catch him.
D选项very that 这两个词的搭配我没见过,我想若要符合本题意思,这个应该是属于语法错误.